3 T vs 1.5 T MR Diffusion and Perfusion Imaging in Hyper-Acute Ischemic Stroke
Kosior R, Hill M, Kosior J, Frayne R
University of Calgary, Foothills Medical Centre, Calgary Health Region
This study compares diffusion and perfusion images of patients with hyper-acute ischemic stroke from both 1.5T and 3T MR scanning systems. The images were registered for direct side-by-side comparison and pairing of quantitative measures. Qualitatively, the 3T images exhibited higher SNR and had better resolution. Though not statistically significant, ADC contrast appeared to be greater at 3T, with scan order also having an effect. Overall, the results show that the 3T scanner produces diffusion and perfusion images that are at least as good or better than 1.5T for hyper-acute stroke assessment.